This is a discussion on Proud owner of a new (to me!) 2003 WRX, but need to ditch the BOV... within the New Member Hangout forums, part of the Community - Meet other Enthusiasts category; And she's a beast! I'm still going over all the work that's been done to it, but as indicated by ...

Proud owner of a new (to me!) 2003 WRX, but need to ditch the BOV...

And she's a beast! I'm still going over all the work that's been done to it, but as indicated by my username, it has an STi 6 speed transmission swap done, along with suspension and exhaust.

My current concern is the CEL that seems to be coming from the MAF sensor, and I'm almost positive after all the reading I've done, that it has to be the HKS blowoff valve. With everyone else's experiences running a full vent to atmosphere setup instead of recirculating, it's clear to me that I need to either get an OEM bypass valve or to find an aftermarket one that recirculates.

I've found an OEM version here Subaru OEM Compressor Bypass Valve - Subaru OEM Engine but at $179 that seems a little steep. Anyone know of any better options to get this fixed? The car is running the stock turbo still so I'm just trying to get the least expensive option that will resolve the CEL :]

Congrats on the car hope you have good luck with it. Hopefully the previous owner has changed the catted up pipe. Im not sure I would have gone with one which had a tranny swap but hope it works out. If an OEM valve is too expensive I would get one that's full recirculation. If you dont mind a used one they range from $30+

Thanks, I'm really loving it, but it does have some hesitation sometimes, and I'm hoping the switch to a BPV will alleviate that.

What's the best source for a used OEM one? So long as it's in decent shape I wouldn't mind going that route for the time being... I tried looking through eBay and couldn't find anything at that price. Is there some place else I should look specifically, or just call around junk yards?

- WillFirst Mods: What to do and what not to do
Current Car: 2014 Golf TDI
Previous Cars:2012 WRB WRX Hatch, 2004 RSX-S, 1998 Grand Prix GTP
"Isn't it amazing how smart you feel when you just aren't being stupid?"

What's the exhaust setup on it? If it has an aftermarket downpipe, then find out if it's tuned or not. It won't "hurt" your year model subaru to not tune it, but you also wont gain any power if it ain't been done.

If you tell us the code number, P-followed by the number, it would help us get a better idea of what to suggest to you.

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